I read a formula to estimate pitch counts from before people kept track of them. The formula is 5.5 pitches per walk, 4.8 pitches per strikeout, and 3.3 pitches per any other plate appearance. I decided to test the formula, and it worked well. For Sabathia, the formula estimated 49,570 career pitches, and he threw 49,493, for a difference of 77, which is 0.16 percent of 49,493. For Kershaw, the formula predicted 26,505 pitches, and he threw 26,558, for a difference of 53, which is 0.20 percent of 26,558. Then I decided to use the formula on a retired pitcher, and I picked Randy Johnson, who pitched from 1988 to 2009. 1988 is the first year baseball-reference has pitch counts for. The formula predicted 66,381 career pitches, and he threw 66,882, for a difference of 501, which is 0.75 percent of 66,882. For Johnson, I excluded 5 starts that had 141 plate appearances that baseball-reference does not have pitch counts for.